arm64: agent_policy build always pulls amd64

The versions.yaml has only a default amd64 binary configured extend the versions.yaml for aarch64 as well.

Fixes: #8373

Signed-off-by: Zvonko Kaiser <zkaiser@nvidia.com>

tools/osbuilder/rootfs-builder/rootfs.sh

@@ -656,6 +656,8 @@ EOF
 			#   	this binary.
 			#
 			opa_bin_url="$(get_package_version_from_kata_yaml externals.open-policy-agent.meta.binary)"
+			opa_bin_url=$(eval echo "${opa_bin_url}")
+
 			info "Downloading OPA binary from ${opa_bin_url}"
 			curl --fail -L "${opa_bin_url}" -o opa || die "Failed to download OPA"
 

versions.yaml

@@ -298,7 +298,7 @@ externals:
       #   this binary.
       #
       # yamllint disable-line rule:line-length
-      binary: "https://github.com/open-policy-agent/opa/releases/download/v0.55.0/opa_linux_amd64_static"
+      binary: "https://github.com/open-policy-agent/opa/releases/download/v0.55.0/opa_linux_${TARGET_ARCH}_static"
 
   ovmf:
     description: "Firmware, implementation of UEFI for virtual machines."